I am using Ubuntu 22.04 to run .net 6 projects. When I run 2 or 3 projects simultaneously, I got this error:
System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached, or the per-process limit on the number of open file descriptors has been reached.
It a long term that I run .net on Ubuntu and I have encountered this before, but cannot remember how I had solved this. The complete stack trace as is:
Unhandled exception. System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached, or the per-process limit on the number of open file descriptors has been reached.
at System.IO.FileSystemWatcher.StartRaisingEvents()
at System.IO.FileSystemWatcher.StartRaisingEventsIfNotDisposed()
at System.IO.FileSystemWatcher.set_EnableRaisingEvents(Boolean value)
at Microsoft.Extensions.FileProviders.Physical.PhysicalFilesWatcher.TryEnableFileSystemWatcher()
at Microsoft.Extensions.FileProviders.Physical.PhysicalFilesWatcher.CreateFileChangeToken(String filter)
at Microsoft.Extensions.FileProviders.PhysicalFileProvider.Watch(String filter)
at Microsoft.Extensions.Configuration.FileConfigurationProvider.<.ctor>b__1_0()
at Microsoft.Extensions.Primitives.ChangeToken.OnChange(Func`1 changeTokenProducer, Action changeTokenConsumer)
at Microsoft.Extensions.Configuration.FileConfigurationProvider..ctor(FileConfigurationSource source)
at Microsoft.Extensions.Configuration.Json.JsonConfigurationSource.Build(IConfigurationBuilder builder)
at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build()
at xyz
at xyz
at xyz/Program.cs:line 14
UPDATE 1:
it is the result of ulimit -a:
real-time non-blocking time (microseconds, -R) unlimited
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 27297
max locked memory (kbytes, -l) 882152
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 27297
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
UPDATE 2: I have used several wrok-arounds so far. But, finally this one resolved my issue:
echo fs.inotify.max_user_instances=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
this is from this question.
